Supports – Easel; book – copy or music score holder – With adjustable inclination
Patent
1986-01-27
1988-02-23
Schmidt, Frederick R.
Supports
Easel; book, copy or music score holder
With adjustable inclination
248460, 269289R, A47G 9704
Patent
active
047265566
ABSTRACT:
Across the surface and around two opposite sides of a table top are looped two elastic hold down straps. A third elastic hold down strap is looped around these two straps and the other two sides of the table top. Lips grip an edge of the table top. The table top is slidably mounted on rails held parallel by two parallel supports each pivotally connected to ends of arms. The arms are pivotally connected at their other ends to a shaft. Upper ends of table legs are pivotally connected to the shaft. Interspaced between arms and legs on the shaft are spacers and a tube through which the shaft passes. When a cap nut is secured on one end of the shaft and a knob is screwed onto threads at the other end of the shaft, arms and legs are pressed together preventing them from pivoting around the shaft and locking the table top in a chosen position of height and inclination. Springs connecting arms and legs bias arms to rise to a vertical position when the knob is loosened.
REFERENCES:
patent: 683724 (1901-10-01), Carr
patent: 696993 (1902-04-01), Mills
patent: 1359811 (1920-11-01), Kerkendall et al.
patent: 2244773 (1941-06-01), Hawk
patent: 2563671 (1951-08-01), Basinger
patent: 3505515 (1970-04-01), Adra
patent: 3747889 (1973-07-01), Gerald
patent: 4036465 (1977-07-01), Kellner
patent: 4196674 (1980-04-01), Van Laarhouen
Hartman Judy J.
Schmidt Frederick R.
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